DxCodebookFY2027 · Oct 1, 2026 – Sep 30, 2027

B20 diagnosis code · Billable category · FY2027

B20 Human immunodeficiency virus [HIV] disease

  • Billable
  • CC
  • HCC 1
  • POA reported

B20 ICD-10 code: a billable diagnosis code in FY2027; the category has no subdivisions.

Where it sits

  1. Chapter 1 Certain infectious and parasitic diseases (A00-B99)
  2. B20 Human immunodeficiency virus [HIV] disease (B20)
  3. B20 Human immunodeficiency virus [HIV] disease
CC / MCC
CC
MS-DRG
969-977, 974-976
HCC V28
1
POA
Reported
Code Editor
–
Index entries
15

Instructions

At B20

Includes

  • acquired immune deficiency syndrome [AIDS]
  • AIDS-related complex [ARC]
  • HIV infection, symptomatic

Excludes1

  • asymptomatic human immunodeficiency virus [HIV] infection status (Z21) Z21
  • exposure to HIV virus (Z20.6) Z20.6
  • inconclusive serologic evidence of HIV (R75) R75

Code first

  • Human immunodeficiency virus [HIV] disease complicating pregnancy, childbirth and the puerperium, if applicable (O98.7-) O98.7

Use additional code

  • code(s) to identify all manifestations of HIV infection

Notes that also apply

Chapter 1 instructions (Includes 1, Excludes2 5, Use additional code 1): printed on the chapter 1 page.

Index entries

  • AIDS (related complex) → B20
  • ARC (AIDS-related complex) → B20
  • HIV → B20
  • Slim disease (in HIV infection) → B20
  • Acquiredimmunodeficiency syndrome (AIDS) → B20
  • Disease, diseasedhuman immunodeficiency virus (HIV) → B20
  • Disease, diseasedslim (HIV) → B20
  • Humanimmunodeficiency virus (HIV) disease (infection) → B20
  • SyndromeHIV infection, acute → B20
  • Dementia (degenerative (primary)) (persisting) (unspecified severity) (without behavioral disturbance, psychotic disturbance, mood disturbance, and anxiety)in (due to)human immunodeficiency virus (HIV) disease → B20 [F02.80]
  • Disease, diseasedviral, virushuman immunodeficiency (HIV) → B20
  • Encephalitis (chronic) (hemorrhagic) (idiopathic) (nonepidemic) (spurious) (subacute)due tohuman immunodeficiency virus (HIV) disease → B20 [G05.3]
  • Humanimmunodeficiency virus (HIV) disease (infection)dementia → B20 [F02.80]
  • Dementia (degenerative (primary)) (persisting) (unspecified severity) (without behavioral disturbance, psychotic disturbance, mood disturbance, and anxiety)in (due to)human immunodeficiency virus (HIV) diseasewith behavioral disturbance → B20 [F02.81-]
  • Humanimmunodeficiency virus (HIV) disease (infection)dementiawith behavioral disturbance → B20 [F02.81-]

NCHS Alphabetic Index. Index first, then the Tabular List.

Medicare grouping and edits

CMS files for B20
CC / MCCCC
PDX exclusion list0188 (5 codes)
Appendix BMDC 25 Human Immunodeficiency Virus Infections, MS-DRG 969-977 (HIV with Extensive O.R. Procedures with MCC…); MDC 25 Human Immunodeficiency Virus Infections, MS-DRG 974-976 (HIV with Major Related Condition with MCC…)
Code Editor–
POAReported
HCC V28HCC 1 HIV/AIDS

CC as a secondary diagnosis, not when the principal diagnosis is on its PDX exclusion list.

CMS: MS-DRG v44 (Appendix B, C), MCE v44, POA list FY2027, 2027 Initial ICD-10-CM Mappings. What the rows mean.